vnstat
A console-based network traffic monitor. tldr-pages
On Linux
Linux
Display traffic summary for all interfaces
vnstatIdentifyDisplay traffic summary for a specific network interface
vnstat --iface network_interfaceIdentifyDisplay live stats for a specific network interface
vnstat --live --iface network_interfaceIdentifyShow traffic statistics on an hourly basis for the last 24 hours using a bar graph
vnstat --hoursgraphIdentifyMeasure and show average traffic for 30 seconds
vnstat --traffic 30Identify